All-fiber Supercontinuum Source with MOPA Structure

In order to obtain high power and high flatness nanosecond all-fiber near-infrared supercontinuum light source, to meet various scientific research, industrial, military and other fields of application. In this paper, an all-fiber laser with the master oscillating power amplifier (MOPA) structure is used. The amplifier structure is two stages pre-amplifier and three stages main amplifier output. The seed source is a 1064 nm direct-modulated pulse tunable laser. The output laser repetition rate is 500 kHz, the pulse width is about 5.6 ns, the spectral flatness of 900 nm to 1700 nm(except the residual laser peak at 1064 nm) is less than 12 dB, and the average power is as high as 105.4 W. Its output power stability is high, can run for a long time, so it can use the practical application in various fields.